Electric switch.



R. C. COLE.

ELECTRIC SWITCH.

APPLICATION FILED MARI?, 191s.

1 1 27,408, Patented Feb. 9, 1915.

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R. e. COLE. ELECTRIC SWITCH.

APPLICATION FILED MAR.17,1913.

Patented Feb. 9, 1915.

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ROBERT C. COLE, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THEAJOHNS-RATT COMPANY, OF HARTFORD,

CONNECTICUT, A CORPORATION 0F CONNECTICUT.

ELECTRIC SWITCH.

citizen of the UnitedStates, residing at Hartford, in the countyv of Hartford and State of and useful Improvement in Switches, of lwhich the following is a'specifcation. A v

which is particularly adapted for main lineservice. 'Such a switch is customarily inlive parts of theswitchf'or thecircuit wires.

Connecticut, have invented a new f Electric n erated for opening which the block isl pushed in for closing the 1,127,408,` Specification of Letters Patent.

appiivaaon and umh i7, isis. serial N0.`7s4,92a.

i T0 all whom it map1 concern Be it known t at I, ROBERT C. COLE, a

f Patented Feb. 9, i915.

circuit andthe latch is released so that the block may be thrown out for opening the circuit, are movably mounted in the cover and are independent of any of the. other parts. .This permits the switch to be opand closing a circuit l y j withl the ,cover closed, and allows thev cover This invention lrelates to a reciprocating snap electric lswitch of the push button'type,

' without disturbing the circuit, that is, the .cover may be opened .and closed whether closed in a boxA for its ,protection and for`- preventing accidental engagement with any..

. parts, and the switch imaybe operated to The object of the invention is to provide a thoroughly insulated, 'quick'acting mul-j Y tiple break switch of. thischaracter `whichv can be located without 'effecting itsz operaservice wires-may enter-the cording to the arrangement of, the wires where the switch is used, and that 'canfbe Adotted line 2-`2 on sealed in the box so as to protect thecoin cuit conditions,

I tact with live parts,

vblock and is a aplted to be the pressure of t 'releasedthe bloc .which has a cover that may closed. The push customer from possibility-of accidental conanyone at any desired time with the vcover opened or closed, which cover, pose of eXaminin the switch'ori the fusesl with which the circuit is protected, can be opened and closed whether l,the.-*switch be opened or closed.- In attaining this end,the stationary conducting contacts to-wh'ich'the circuit wires are joined pockets in an insulating base which has provision for the insertion of fuses into thefcircuit. The movable conducting contacts are mounted upon an insulating block which is movable in and out on a 'guidevpost that'is supported by the base. tact block is normally thrust out'by aspring located von the ost between the base and the Y forced in against e spring byl'va push button. When the block isY pushed 1n, `it is held by a latch on the'V ost, which latch is designed to be released y avpush button and when and the movable contacts are thrown 4out by .the spr The base pany from fraudulent manipulation and the but can be operated by'v for thev purwithout altering the cirare mountedA yin he movable conremoved. Fig. 2

'block and projecting inwardly `blades 9. The

to be opened for the purpose of ascertaining the condition'of the switch or of the uses the circuit is opened or closed without changing the rela-tion ofthe conducting alter the condition' of the circuit when the cover vis opened as well aswhenthe cover is closed. v

Figure of the same on the.

end elevation with the casingv cut in section.

The base l vmay be made of porcelain or any other desired insulating material.

Spring contact fingers 2 are located in` pockets in the base.

The contact ngers on vone side are connected with terminal lugs and on the other side are connected with the center contacts 4 of the fuse receptacles 5, the outer contacts of which are connected with terminal lugs 6.

` lthe center of the base andV Supported at Yprojecting outwardly is an angular post :7. Movable up and down on this post is a block 8` of insulating material.y -Securedto the are contact blades on each side are electricallyjoined so that when the block is pushed -in the movableblades will engage the circuit. Cn the post andthrusting' 'be ing. with the fixed contactsV and the-block witlif located in a box be opened and buttons by means of the movable contacts are spring 10. 'This spring tween the base and the block is a spiral normally thrusts the block outwardly, a pin llthrust through the post limiting the voutward movement of the fbloclr. In a slot in the upper end o the post is apivoted latch l2. The inner end of this Ylatch'is thrust out by a spring 13 so that when the block is ushed inthe shoulder 14 on the latch will engage the l of the -accompanyingvdrawings shows a'plan of the switch with the cover shows a vertical ,section lane indicated bythe ig. 1. Fig` Bshows an with the ixed lingers and close the glecti'ical edge of the block and hold itfroin outward movement, as shown in Fig. 3. When' the latch is moved so as to release the block, the spring quickly throws the block outward to the position seen in Fig. and instantly opens the circuit.

The lswitch is located in a box l5 which is desirably formed of sheet steel with insulating bushings 16 in the openings through which the circuit wires are designed to pass. Hinged to the box is a cover 17 which is 'also desirably stamped from sheet steel. A spring tongue 18 is desirably arranged so as to pass through an opening in the cover on the side opposite the hinge in order to hold the cover closed and permit it to be sealed if desired.

Movably mounted in the cover is a push button 19 which is normally thrust out by a leaf spring 20 that is attached to the inside ofthe cover. Adjacent to this button and movably mounted in the cover is a button 21 that is normally thrust out by a spring Q2. The button 19 is so arranged that when it is pushed in it will engage the outer surface of the insulating block bearing the movable contacts or the metal bushing 23 set into that block, and will force itinward and cause the blades on the block to engage the contacts on the base. Then the block is pushed in by this button sufficiently7 tar for the blades and contacts to make proper engagement, the latch 1'2- that is supported by the guiding post springs out and engages the block or metal bushing in the block so as to hold the parts in` the positions to which they are moved. The bu*- ton 21 is arranged so that when pushed 'in it will engage the outer end of the latch 1Q and move it in such manner that it will release the block and allow the spring to throw it out and open the circuit.

This switch can be located according to the condition of the wires, either end up. and the movements are suiiiciently rapid and great to meet the requirements for safety. The conducting parts are inclosed and protected in such manner as to eliminate the possibility of accidental contact therewith. The switch can be operated at any time by anyone without danger, and the cover can be sealed so as to prevent access to the interior. The cover may be opened when desired without disturbing the circuits for permitting inspection of the fuses or the insertion or removal of a fuse, and the switch will remain in the condition in which it is set, whether the cover is opened or closed and yet it canbe operated with ease whether the cover is opened or closed.

The invention claimed is:

An electric cut-out comprising an insulat- E ing base, conducting clips fixed on the base. a post extending outwardly from the base` a block movable on the post toward and from the base7 conducting blades carried by said block, a spring on the post for moving the kblock from the base, ay latch pivotally mounted in the post and adapted to engage and temporarily hold the block in its inner position with the spring tense and the blades engaged with the clips, a boX con'- taining said switch parts, a cover for closing the box, a push button mounted on the covery and adapted when the coveris closed to be engaged with and to push the block toward the base and cause the engagement of the blades with the clips, and a push button mounted on the cover and adapted when the cover is closed to be engaged with and to release the block retaining-latch, said push buttons being disconnected from any of the switch parts so that the cover by which they are carried can be opened and closed without atl'ecting the circuit conditions.

ROBERT C. COLE. 

